Trunk comparison: Seat Ibiza vs VW ID.4

Key Dimensional Differences

The VW ID.4 offers significantly more cargo length: with the seats folded down, the trunk is 11 in (≈20%) longer, and with the rear seat upright, 10.2 in (≈38%) longer than the Seat Ibiza.

The width of the trunk opening is 7.5 in (≈22%) larger on the ID.4. In contrast, the Seat Ibiza has a considerably greater trunk depth (loading edge to trunk floor): +3.5 in (≈90%).

Smaller differences (not highlighted): The height of the trunk opening on the Ibiza is 0.8 in (≈3%) larger, the loading edge of the ID.4 is 2 in (≈7%) higher above the ground, and the narrowest width inside the trunk is only 0.8 in (≈2%) larger on the ID.4.

Impact on Usability

The longer loading dimensions and larger opening of the ID.4 make it more practical for long or bulky items: furniture parts, long sports equipment (e.g., surfboards, skis), or flat furnishings are easier to accommodate and load because more length and a wider opening are available.

For moving, DIY shopping, or camping with large luggage, the ID.4 is therefore noticeably more flexible in everyday use.

The deeper trunk of the Seat Ibiza means the cargo floor lies further below the loading edge. This creates more usable depth for stacked goods or tall boxes and ensures that luggage sits deeper and thus often more securely or less visibly.

Combined with the slightly lower loading edge (the ID.4 sits ~2 in higher), loading heavy items in the Ibiza is often somewhat more ergonomic. However, the shorter length and narrower opening limit the ability to carry long or very wide items.

Conclusion: Those who regularly transport long or wide cargo clearly benefit from the VW ID.4 (more length, larger opening). Those who mainly carry suitcases, shopping crates, or stackable cargo and prefer a somewhat deeper load floor and lower loading edge are well served by the Seat Ibiza.